7.5 - RHSA-2020:0204

Problem Description:

An update for kernel is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

2. Relevant releases/architectures:

Red Hat Enterprise Linux BaseOS E4S (v. 8.0) - aarch64, noarch, ppc64le, s390x, x86_64

3. Description:

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

* hw: Machine Check Error on Page Size Change (IFU) (CVE-2018-12207)

* hw: TSX Transaction Asynchronous Abort (TAA) (CVE-2019-11135)

* kernel: nfs: use-after-free in svc_process_common() (CVE-2018-16884)

* hw: Intel GPU blitter manipulation can allow for arbitrary kernel memory write (CVE-2019-0155)

* Kernel: vhost_net: infinite loop while receiving packets leads to DoS (CVE-2019-3900)

* Kernel: page cache side channel attacks (CVE-2019-5489)

* hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) (CVE-2019-9506)

* kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c (CVE-2019-10126)

* kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver (CVE-2019-14816)

* Kernel: KVM: OOB memory access via mmio ring buffer (CVE-2019-14821)

* kernel: heap overflow in marvell/mwifiex/tdls.c (CVE-2019-14901)

* hw: Intel GPU Denial Of Service while accessing MMIO in lower power state (CVE-2019-0154)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Bug Fix(es):

* Backport TCP follow-up for small buffers (BZ#1739184)

* TCP performance regression after CVE-2019-11478 bug fix (BZ#1743170)

* RHEL8.0 - bnx2x link down, caused by transmit timeouts during load test (Marvell/Cavium/QLogic) (L3:) (BZ#1743548)

* block: blk-mq improvement (BZ#1780567)

* RHEL8.0 - Regression to RHEL7.6 by changing force_latency found during RHEL8.0 validation for SAP HANA on POWER (BZ#1781111)

* blk-mq: overwirte performance drops on real MQ device (BZ#1782183)

* RHEL8: creating vport takes lot of memory i.e 2GB per vport which leads to drain out system memory quickly. (BZ#1782705)

4. Solution:

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

5. Bugs fixed (https://bugzilla.redhat.com/):

1646768 - CVE-2018-12207 hw: Machine Check Error on Page Size Change (IFU) 1660375 - CVE-2018-16884 kernel: nfs: use-after-free in svc_process_common() 1664110 - CVE-2019-5489 Kernel: page cache side channel attacks 1698757 - CVE-2019-3900 Kernel: vhost_net: infinite loop while receiving packets leads to DoS 1716992 - CVE-2019-10126 kernel: Heap overflow in mwifiex_uap_parse_tail_ies function in drivers/net/wireless/marvell/mwifiex/ie.c 1724393 - CVE-2019-0154 hw: Intel GPU Denial Of Service while accessing MMIO in lower power state 1724398 - CVE-2019-0155 hw: Intel GPU blitter manipulation can allow for arbitrary kernel memory write 1727857 - CVE-2019-9506 hardware: bluetooth: BR/EDR encryption key negotiation attacks (KNOB) 1744149 - CVE-2019-14816 kernel: heap overflow in mwifiex_update_vs_ie() function of Marvell WiFi driver 1746708 - CVE-2019-14821 Kernel: KVM: OOB memory access via mmio ring buffer 1753062 - CVE-2019-11135 hw: TSX Transaction Asynchronous Abort (TAA) 1773519 - CVE-2019-14901 kernel: heap overflow in marvell/mwifiex/tdls.c